CH188522A - Process for the preparation of a new monoazo dye. - Google Patents
Process for the preparation of a new monoazo dye.Info
- Publication number
- CH188522A CH188522A CH188522DA CH188522A CH 188522 A CH188522 A CH 188522A CH 188522D A CH188522D A CH 188522DA CH 188522 A CH188522 A CH 188522A
- Authority
- CH
- Switzerland
- Prior art keywords
- new
- pure
- dye
- bluish
- preparation
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
- C09B29/00—Monoazo dyes prepared by diazotising and coupling
- C09B29/0003—Monoazo dyes prepared by diazotising and coupling from diazotized anilines
- C09B29/0007—Monoazo dyes prepared by diazotising and coupling from diazotized anilines containing acid groups, e.g. CO2H, SO3H, PO3H2, OSO3H, OPO2H2; Salts thereof
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
- C09B29/00—Monoazo dyes prepared by diazotising and coupling
- C09B29/24—Monoazo dyes prepared by diazotising and coupling from coupling components containing both hydroxyl and amino directing groups
- C09B29/28—Amino naphthols
- C09B29/30—Amino naphtholsulfonic acid
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Coloring (AREA)
Description
Zusatzpatent zum Hauptpatent Nr. 184014. Verfahren zur Darstellung eines neuen Nonoazofarbstoffes. Es wurde gefunden, dass man einen neuen, wertvollen Monoazofarbstoff erhält, wenn man die Diazoverbindung von 4-Amino-resorcin- di-p-chlor-phenyläther von der Formel
EMI0001.0008
mit 8-Benzoylamino-l-oxy-naphthalin-disulfon- säure-(3.6) kuppelt.
Der neue Farbstoff bildet ein bläulichrotes Pulver, welches in Wasser mit lebhaft blau stichig roter, in konzentrierter Schwefelsäure mit reinblauer Farbe löslich ist. Er färbt Wolle, Seide und Zelluloseesterlacke in sehr schönen, reinen rotvioletten Tönen von sehr guter Lichtechtheit; die Textilfärbungen zei gen ausserdem noch eine gute Walkbeständig- keit und eine besonders gute Seewasserecht- heit. Der reine und blaustichige Farbton des neuen Farbstoffes ist in seiner Lebhaftigkeit in der Azoreihe unübertroffen.
<I>Beispiel:</I> 34,6 kg 4-Amino-resorcin-di-p-chlor-phenyl- äther, eine farblose, feste Substanz, welche erhalten wird, indem man 2.4-Dichlor-nitro- benzöl mit p-Chlor-phenol in Gegenwart von Alkalihydroxyd bei Temperaturen von 130 bis 150 zur Umsetzung bringt, reduziert und im Vakuum destilliert (285 bei 14 mm) werden diazotiert. Die Diazolösung lässt man unter gutem Rühren bei 0 in eine wässrige Lösung von 42,
5 kg 8-Benzoylamino-l-oxy- naphtbalin-disulfonsäure-(3. 6) und überschüs sigem Natriumacetat einlaufen. Durch all mähliche Zugabe von Sodalösung wird neu tralisiert. Nach beendeter Kupplung wird auf geheizt, ausgesalzen, filtriert und getrocknet. Der erhaltene Farbstoff bildet ein bläulich rotes Pulver, das in Wasser mit lebhaft blaustichig roter, in konzentrierter Schwefel säure mit reinblauer Farbe löslich ist.
Er färbt Wolle und Seide in klaren, rotvioletten Tönen von sehr guter Licht- und Walkechtheit und vorzüglicher Seewasserechtheit. Die Licbt- echtheit eines mit dem neuen Farbstoff ge färbten Zelluloseesterlackes ist hervorragend.
Additional patent to main patent No. 184014. Process for the preparation of a new nonoazo dye. It has been found that a new, valuable monoazo dye is obtained if the diazo compound of 4-amino-resorcinol-di-p-chloro-phenyl ether of the formula
EMI0001.0008
with 8-benzoylamino-1-oxy-naphthalene-disulfonic acid- (3.6) couples.
The new dye forms a bluish-red powder, which is soluble in water with a lively blue-tinged red color, and in concentrated sulfuric acid with a pure blue color. It dyes wool, silk and cellulose ester lacquers in very beautiful, pure red-violet shades of very good lightfastness; The textile dyeings also show good flexing resistance and particularly good seawater fastness. The pure and bluish hue of the new dye is unsurpassed in its liveliness in the azo range.
<I> Example: </I> 34.6 kg of 4-amino-resorcinol-di-p-chlorophenyl ether, a colorless, solid substance which is obtained by adding 2.4-dichloro-nitrobenz oil with p -Chlor-phenol in the presence of alkali metal hydroxide at temperatures from 130 to 150 to the reaction, reduced and distilled in vacuo (285 at 14 mm) are diazotized. The diazo solution is left with thorough stirring at 0 in an aqueous solution of 42,
5 kg of 8-benzoylamino-1-oxynaphtbalin-disulfonic acid (3, 6) and excess sodium acetate run in. Gradual addition of soda solution will neutralize. After the coupling has ended, the mixture is heated, salted out, filtered and dried. The dye obtained forms a bluish red powder which is soluble in water with a vivid bluish red, in concentrated sulfuric acid with a pure blue color.
It dyes wool and silk in clear, red-violet shades with very good lightfastness and millfastness and excellent seawaterfastness. The light fastness of a cellulose ester varnish colored with the new dye is excellent.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH188522T | 1935-09-24 | ||
CH184014T | 1935-09-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH188522A true CH188522A (en) | 1936-12-31 |
Family
ID=25720965
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH188522D CH188522A (en) | 1935-09-24 | 1935-09-24 | Process for the preparation of a new monoazo dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH188522A (en) |
-
1935
- 1935-09-24 CH CH188522D patent/CH188522A/en unknown
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